Baldwin Boxall Communications Ltd.
Wealden Industrial Estate, Farningham Road
Crowborough, East Sussex, TN6 2JR
Telephone: 01892 664422 Fax: 01892 663146
Email: mail@baldwinboxall.co.uk
IAR10
Issue 5.1 10/12/1999
ECR 965
Adept AR10
Operating Instructions
2
AR10 ROUTING MIXER
The AR10 is a routing mixer and enables the routing of up to 10 inputs to any one of 10 outputs. It consists of a
mounting frame and motherboard. Into the motherboard are plugged any of our input modules and the desired
number of ARM output modules.
It is possible to group a number of inputs together using the priority circuits on the input modules. The output
from the group can be routed through to the ARM output modules at the desired priority. This is achieved by
using the 2 way DIL switches located on the AR10 motherboard.
Each input module except number 10 is connected to the input of a virtual earth mixer buffer amplifier. This
is via DIL switches section 2 SW2, 4, 6, 8, 10, 12, 14, 16 and 18 see figure 5.
If input group priority is not required the above switches should be set ‘ON’ and all others ‘OFF’. Section 1 of
the above switches allows the output of the input modules to be mixed together in groups. They must only be
fed to one virtual earth mixer by selecting ‘OFF’ the appropriate section 2 of the above switches.
The priority facility between input modules can be selected using SW1, 3, 5, 7, 9, 11, 13, 15 and 17.
Example: If inputs 1, 2 and 3 are required to have priority in a group and an output or input 1 buffer amplifier,
the switches would be set as follows :-
SW
SECTION 1 SECTION 2 SW SECTION 1 SECTION 2
1ON ON 10OFF ON
2ON ON 11OFF OFF
3ON ON 12OFF ON
4 ON OFF 13 OFF OFF
5OFF OFF 14OFF ON
6OFF OFF 15OFF OFF
7OFF OFF 16OFF ON
8 OFF ON 17 OFF OFF
9OFF OFF 18OFF ON
Selection of Input Priority
Input Priority is selected using straps between the required pins on the DIL header located on each of the Audio
Routing Output Modules (ARM). Nine Input sources from the input modules are on the lower row whilst the 9
priority destination levels are presented on the upper row. Therefore, to select input 1 at the first priority,
simply strap between input source 1 and priority level 1. Using this technique any input can be selected to any
priority level. Priority level 9 is designated specifically for music signals providing a slow recovery to its
maximum level.
Selection of Priority Type
Basically two types of priority can be set using the two DIL switches mounted on the ARM module, cascade
and equal (1st come, 1st served). Using these switches a combination of both cascade and priority may be
realised. For example if cascade is required on the first three and equal on the remaining five, select cascade
switch 1, 2 and 3 ‘ON’ and all others ’OFF’. Select equal switch 1, 2 and 3 ‘OFF’ and all others ‘ON’.
However if cascade priority is required on all eight select all cascade switches at the ‘ON’ position and select
all equal switches ‘OFF’.
Night Volume Reduction
The output can be reduced to a predetermined level by connecting pin 3 of the 25 way D connector to 0V,
normally using a time switch. This facility is useful to reduce night time - local residence annoyance when
speakers are mounted externally e.g. railway platforms. This reduced level is adjusted using the preset night
volume reduction control mounted on the ARM module.
3
ARM MODULE
Floating Line Output
Rated Output Level : 0dBM (0.775V)
Maximum Output Level : +6Dbm (1.4v)
Output Source Impedance : 130 Ohms
Distortion (1KHz rated output) : Less than 0.1%
Frequency Response -3dB : 30Hz - 20KHz
Output Noise (no input selected ref rated output) : Better than 80dB
Night Volume Level Reduction adjustable from : 0 - 26dB
Module Current Consumption with no inputs accessed : 20mA
Module Current Consumption with 9 inputs accessed : 62mA
AR10 MAIN FRAME
Supply Voltage AC Supply 50 - 60Hz : 220 - 240V
DC Supply : 23 - 30V
Fuse Protection AC 5 x 20mm : 2A (T)
DC 6.3 x 31.75mm : 3A (F)
Battery 6.3 x 31.75mm : 3A (F)
Terminations AC Supply Input : 3 Pin DIN-IEC6A
DC Supply (Battery) : 3 Pin Screw Terminated Connector
Signal Input (10 off) : 240 Deg 5 Pin DIN Locking
Dimensions Depth (Front to Rear) : 380mm (15”)
Width (Rack Mounted) : 428.6mm (19”)
Height : 88mm (3.5”) 2 Unit
Weight : Approx 5 Kgs
The 25 way D connector is mounted at the rear of the ARM module.
PIN FUNCTION
1 Line level 0dBM output balanced
2 Line level 0dBM output balanced
3 Night volume reduction Connect to 0V to reduce output level
4 Priority 9 Select Connect to 0V to select priority 9
5 Priority 2 Monitor output
6 Priority 1 Acknowledge Connects to 0V when priority 1 selected
7 Priority 2 Acknowledge Connects to 0V when priority 2 selected
8 Priority 3 Acknowledge Connects to 0V when priority 3 selected
9 Priority 4 Acknowledge Connects to 0V when priority 4 selected
10 Priority 5 Acknowledge Connects to 0V when priority 5 selected
11 Priority 6 Acknowledge Connects to 0V when priority 6 selected
12 Priority 7 Acknowledge Connects to 0V when priority 7 selected
13 Priority 8 Acknowledge Connects to 0V when priority 8 selected
14 Busy Lamp/relay output Connects to 0V when ARM module is busy
15 0 Volts Common 0V for selection switches
16 + 24 Volts Common + 24V for lamps etc.
17 Priority 1 monitor output
18 Priority 1 Select Connect to 0V to select priority 1
19 Priority 2 Select Connect to 0V to select priority 2
20 Priority 3 Select Connect to 0V to select priority 3
21 Priority 4 Select Connect to 0V to select priority 4
22 Priority 5 Select Connect to 0V to select priority 5
23 Priority 6 Select Connect to 0V to select priority 6
24 Priority 7 Select Connect to 0V to select priority 7
25 Priority 8 Select Connect to 0V to select priority 8
4
OUTPUT MODULES
DIL header to select priority level
10987654321
Zone 1Zone 2Zone 3
10987654321
To other ARM modules
SWITCHES AND ACKNOWLEDGE LAMPS
Mic
zone
select
zone
select
zone
select
Mic
zone
select
Mic
zone
select
Mic
zone
select
Mic
zone
select
Mic
zone
select
Evac Alert Music
select
25 way D
connector
1
2
3
4
5
6
7
8
9
1st ARM Module
Busy Lamps
Audio to
zone 1 amplifiers
zone bus y
1
2
3
4
5
6
7
8
9
2nd ARM Module
1 & 2
6
18
7
19
8
20
9
21
10
22
11
23
12
24
13
25
4
14
Audio to
zone bus y
1 & 2
6
18
7
19
8
20
9
21
10
22
11
23
12
24
13
25
4
14
Busy Lamps
zone 2 amplifiers
1
2
3
4
5
6
7
8
9
Audio to
zone bus y
1 & 2
6
18
7
19
8
20
9
21
10
22
11
23
12
24
13
25
4
14
Busy Lamps
3rd ARM Module
zone 3 amplifiers
+24V
0V
1 109
8
765
43
2
INPUT MODULES
Evac Alert Music Surveillance
3
17
13
151197
5
1
24
68
10 12 14
16
18
Virtual Earth Mixers
2
1
Busy
Pri
1
2
LK1 LK2
LK3 LK4
LK5 LK6 LK7
LK8
LK9 LK10
To enable remove yellow link
200Hz High Pass Fi lter
Figure 1 - A Typical System Configuration
SW
SW
mother board
Refer to Fig. 5
DIL switches on
5
R22 R24
C1
R25
C3
ICB
C18
PIN2
IC11 R21 R23
D19
D18
C8
C2
R26
4007UB
NIGHT LEVEL
VR2
C13 IC3
C4
VR1
Preset night volume reduction level
4001B
IC9
4071B
C19
C7
4001B
4016B
D1
9
87654321
IC10
C21
PRIORITY
LEVEL
INPUT
SRCE
4016B
R40
C5
R32 C16
D16
ON
SW1
C17
R31
D12 D8
D4
R4 R8
C11
C10
R37
TL072
IC12
D14 D10
D6 D2
R6 R10 R14
C22 R12 R16
12345678
IC4
40071B
4001B
IC2
R3 R2
EQUAL
TXR1
C14
R38
R35
R18
RP1
OUPUT LEVEL
VR3
C12
D17
D3
R39 R17
C20
4001B
IC7
IC5
R1
FUSE 1A
IC1
ULN
2803
4078B
C23
RP3
IC6
RP2
ON
SW2
PIN 1
CASCADE
123
4
5
6
78
C24
SURVEILLANCE
Preset surveillance tone level
Master output
level control
DIL header to
select priority level
Select equal 1st come 1st serve priority Select cascade priority
24V output fuse to pin 16
of the D connector
25D connector remote zone
selection, acknowledge lamps etc.
BBC LTD PC1090
R36 REG1 TR1
ZD1 R20
R19
C6
R34
R29
R30
R27
R28
D15
D13
D11
D9
D7
D5
R5
R7
R9
R11
R13
R15
C15
R33
C9
Figure 2 - ARM PCB Layout
6
Microphone Console
PreAmplifier
Oscillator
MICSUV
5 pin DIN
connector
INPUT
ACCESS
IMP
SURV PIN
Input Modules
AR10
ARM Output Modules
1st Priority
2nd
9th
Master
ARM Module
Input 10
Oscillator
Detector
B
A
1
3
11
23
6
5
5
To all other
IMP18
Modules
Surveillance
Module
eg IMP18
To other
ARM
Modules
17
5
1
2
25 Way Connector
Figure 3 - Microphone and line Monitori ng
7
O N
12
ACS1
0V
IP1A
IP1B
Pri
Busy
SW1
ACS2
O N
12
0V
IP2B
IP2A
SW2
C1
IC1
R2
C3
C2
R3
C5R5C6
LK1
R6C8C7
R7
R83
Remove LK1 - LK10 to select
200Hz high pass filter.
1
O N
12
Pri
Busy
O N
12
0V
C11
R10
C13
C12
R11
IC2
C15
R13
C16
LK2
R14
C18
C17
R15
R4
R12
C4 C14
IP3A
IP3B
SW4
ACS3
SW3
2
O N
12
Pri
Busy
O N
12
0V
R20
R23
C27
C28
R22
LK3
C26
R21
C25
IC3
C21
R18
C23
C22
R19
C24
3
SW5
SW6
ACS4
IP4B
IP4A
O N
12
Pri
Busy
O N
12
0V
R28
R31
C37
C38
R30
LK4
C36
R29
C35
IC4
C31
R26
C33
C32
R27
C34
4
SW7
ACS5
SW8
IP5B
IP5A
O N
12
Pri
Busy
O N
12
0V
R36
R39
C47
C48
R38
LK5
C46
R37
C45
IC5
C41
R34
C43
C42
R35
C44
5
SW9
ACS6
SW10
IP6B
IP6A
O N
12
Pri
Busy
O N
12
0V
R44
R47
C57
C58
R46
LK6
C56
R45
C55
IC6
C51
R42
C53
C52
R43
C54
6
SW11
ACS7
SW12
IP7B
IP7A
O N
12
Pri
Busy
O N
12
0V
R52
R55
C67
C68
R54
LK7
C66
R53
C65
C64
IC7
C61
R50
C63
C62
R51
SW13
ACS8
SW14
IP8B
IP8A
O N
12
Pri
Busy
O N
12
0V
R60
R63
C77
C78
R62
LK8
C76
R61
C75
IC8
C71
R58
C73
C72
R59
C74
78
SW15
ACS9
SW16
IP9B
IP9A
O N
12
Pri
Busy
O N
12
0V
9
R71
C87
C88
R70
LK9
C86
R69
C85
IC9
C81
R66
C83
C82
R67
C84
SW17
ACS10
SW18
IP10B
IP10A
R75
R78
C97
C98
R77
LK10
C96
R76
C95
IC10
C91
R73
C93
C92
R74
10
PRI OUT
PRI IN
REST.
BUSY
CHIME
ACCESS
+24VPAMS32
1
BALDWIN BOXAL L COMMUNICATIO NS
SEP 1995
PC1091
INPUTS
O
u
t
O
u
t
O
u
t
O
u
t
O
u
t
O
u
t
O
u
t
O
u
t
O
u
t
R86
R85
R84
R87
1
R82
2
R8
C9
D1
REG1
D2
R16
C19
REG2
3 4
D3
R24
C29
REG3
D4
R32
C39
REG4
5 6
D5
R40
C49
REG5
D6
R48
C59
REG6
7
D7
R56
C69
REG7
8
D8
R64
C79
REG8
9
D9
R72
C89
REG9
10
OUTPUTS
TXR1
I/P 1
I/P 2
I/P 3
I/P 4
I/P 5
I/P 6
I/P 7
I/P 8
I/P 9
SURV.
+24V
0V
R88
R89
R90
R91
R92
R68
TO F USE
24VAC
FROM FUS E
+VE
24VAC
D10R79
REG10
C99C100
D17D18
D13 D15 D14 D16
C107
1
2345678
9
101112
PL1
D12
C102
C106
REG11
C105
R81
R80
C103
D11
C104
C94
REG12
C10 C20 C30 C40 C50 C60 C70 C80 C90
Figure 4 - AR10 P ri nted Circuit Board Layout
21 345678910
VIRTUAL EARTH MIXERS AND HIGH PASS FILTERS
8
1
Pri Busy
12
Sw 1
12
12
2
3
4
Sw 5
Sw 3
12
12
10
9
Sw 17
Sw 15
2
1
Sw 2
2
1
2
1
2
Sw 4
Sw 6
Sw 8
1
2
1
Sw 18
Sw 16
Section 5- 8
1
2
3
4
Virtual earth
mixers
Lk1
Lk2
Lk3
Lk4
High pass
filter @ 200Hz
Lk10
Lk9
Remove link to
select high pass
Inpu t mo d u l e s
to ARM
output
modules
Figure 5 - AR10 Input Configuration
10
9
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